1. Use models to find the sum or difference.
a) 3.4 + 2.89 b) 3.1 + 1.9
c) 2.26 + 2.79 d) 4.42-2.56
e) 3.1 - 1.05 f) 1 - 0.08

the answer is a i belaeve atleast thats what my calculator just gfave me

step-by-step explanation:

sorry i just need to anwers this to get points

step-by-step explanation:

$2416.6

step-by-step explanation:

per hour = $ 25

total work time = 35

commission = 15%

total she has to make = $ 4,500

let she sold x dollar products

so her commission will be 15 % of x

now

total = weekly basic pay + commission

4500= (25*35) + 15 % of x

4500=875 + * x

4500-875 =   * x

3625= * x

multiplying wwith 100 on both sides gives

36250 = 15 x

now

x =  

x= $2416.6

look in attachments

step-by-step explanation:

a = (-2, 0)

b= (-4, 0)

c = (-5,2)

d = (-1,2)